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Studies find global COVID-19 lockdowns have significantly reduced PM2.5 and NO2 pollution, but ozone up

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Levels of two major air pollutants have been reduced significantly since lockdowns began in response to the COVID-19 pandemic, but a secondary pollutant—ground-level ozone—has increased in China, according to new research. For comparison, columns over the same time periods are shown for 2019.

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IHS: continued legislative focus on pollutants to drive sensor market for internal combustion engines

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billion units in 2019, up from about 1.08 Overall, IHS expects a six-year compound annual growth rate (CAGR) from 2013 to 2019 of 3.6%. As a pollutant, NO x has long been a stronger focus for US legislation, which also dictates that the emission parameters are measured under realistic driving cycle conditions. billion in 2013.

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